Question

1234 + 678 + 766 + 1322 b. 427 x42 + 427 x 35 + 427 x23 c. 248 x 125 – 248 x24 – 248

Answer 1

\(1234 + 678 + 766 + 1322=(1234+766)+(678+1322)=2000+2000=4000\)

\(427\times42+427\times35+427\times23=427\times\left(42+35+23\right)=427\times100=42700\)

\(248\times125-248\times24-248=248\times\left(125-24-1\right)=248\times100=24800\)